Radiator valve



J. CARMEL.

RADIATOR VALVE.

APPLICATION FILED JAN. 1, 1922.

1,426, 1 50, Patented Aug. 15, 1922.

IN VEN TOR Jose h Carme/ ATTORNEY 4. 2' FEW JOSEPH CAR-MEL, on NEW YORK, N. L, AssIGNOB. To SAMUEL Osman-0H, or New" YonK, N. Y. l

RADIATOR VALVE.

Specification of Letters Patent. Patented Aug. 1 5, 15922.

Application filed January 7,1922. Serial No. 527,683.

T 0 all whom it may concern:

Be it known that I, J osnrrr CARMEL, a citizen or" Poland, residing at New York, in the county of New York and State or New York, have invented certain new and useful Improvements in Radiator Valves, of which the following is a specification.

The main object of this invention is the provision of a. radiator valve which will allow quick'expulsion of any air within the radiator at the time when the steam is allowed to enter after an idle period, and which will immediately after expulsion of the air and entry of the relatively warmer steam, shut off further flow so that the steam will be retained within the radiator.

Another object is the provision of such a valve which will be gradually closed by virtue of the rising temperature caused by the influx of steam, the closing being gradual in order to allow expulsion of the airmentioned above.

Another object is the provision of such a valve having a movable piston-like. member adapted to allow fluids to pass the same and having the quality of buoyancy on water.

The above and other objects will become apparent in the description below, in which like-named characters of reference refer to like-named parts in the drawings.

Referring briefly to the drawings, Fig. 1 is a sectional elevational view of the valve in closed position.

Fig. 2 is a similar view showing the valve in open position.

Fig. 3 is a front elevational view showing the valve partly in section.

Fig. at is a cross-sectional view taken on the line i t of Figure 1, and Fig. 5 is a similar view taken on the line 55 of said figure.

Fig. 5 is a perspective view of the member which supports the valve within its chamber.

Referring now in detail to the drawing, the numeral 10 indicates a semi-spherical body having an internally-threaded neck 11 and externally threaded nozzle 12 formed thereon. Said nozzle provides a means for connecting the valve to a steam line or radiator. Steam enters the valve through port 14. and. passes into the valve chamber 13.

A. tubular shell 15 engages the threads of neck 11 and is surmounted by a semi'spherical cap 16 provided with a plurality of vents 17. An annular plate 18, anchored horizontally, in the bodylO, is providedwith an upwardly-extending bracket 19 and a support web 20, the latter extending downwardly from the plate 18.

It is well known that when the steam supply in aheating system is turned ofl, the steam remaining within the system will cool and condense, thereby causing the pressure within the system to fall below that of the atmosphere. Hence, unless the air is -.pre vented from entering, it will thus enter the system and will offer difliculties when the steam is again turned on, such as poor and slow circulation of steam. In order to drive out any air which may be in'the system, I

provide a fixed plate 23 under the cap 16, said plate having a central. passage 29 therethrough, andhaving a ball or sphere 28 of relatively light material, normally resting therein. As the steam is turned on, the pres sure in the system will rise, and thus the air within the system will be force out through the port or passage 29 by lifting the light-weight sphere 28.

A hollow cylindrical piston 26, having lateral fingers extendingradially therefrom, is slidably mounted within the tube 15, and is provided at its upper end with a central curved boss 27 adapted-to register with and close the passage 29, from beneath the plate 23-. The lower end of the piston is cupped and. the upper extremities of the links of a lazy tongs 24 engage the piston within the cupped portion. ally attached to the bracket 19 at 25, and

lower extremities 22 of the tongs lie against blades 21 formed of two layers of metals of different coefficients of expansion brazed together, said blades being attached in the form of a V to the web 20. The blades 21 are so constructed that the inner layer of .metal has a lesser coefficient of expansion than the outer, so that upon heat entering the blades, the same will tend to move toward each other so as to close the V.

It is now apparent that after the air has been expelled from the systemthrough' the vents 17 as previously described, the warm steam or warm air which contacts with the blades 22 will cause the latter to close inward and will thus extend the lazy tongs 24, causing the float 26 to rise and close the passage 29, preventing escape of steam. When the steam is shut off, the float will again drop, and the passage 29 would open were it not for the sphere 28, which lies over the Said lazy tongs is pivot passage 29 and thus prevents air from entering the system. Consequent condensation 01 the steam within the system will cause diminution of the pressure therein, so that when the steam is again turned on, it will flow and circulate rapidly and freely.

Another advantage of my valve is that in the event that water should enter the same, the float will rise and close the passage 29, so that the water cannot flow out and do possible damage.

I claim:

1. A. valve comprising a casing, an outlet in the upper end of said casing, a cap having vents therein surrounding said outlet, a light-weight sphere lying within said cap and adapted normally to close said outlet, an inlet near the bottom of said casing, a piston slidably mounted in said casing and having a plurality of horizontal radiating fingers separating said piston from t ie walls of said casing to allow the tree passage of fluid past the same, a pair of thermostatic blades bound together at one end in the form of an erect V and mounted in the bottom oi said casing and adapted to be actuated byheat to close toward each other, and a lazy tongs having its upper extremity in contact with said piston'and its lower extremity in contact with said blades.

2. A valve comprising a casing, an outlet in the upper end of said casing, a cap having vents therein surrounding said outlet, means lying within said cap adapted to normally close said outlet, an inlet near the bottom of said casing,a piston slidably mounted in said casing and having a plurality of horizontally radiating fingers separating said piston from the walls of said casing to How the tree passage of fluid past the same, a pair of thermostatic blades bound together at one end in the form of an erect V and mounted in the bottom of said casing and adapted to be actuated by heat to close-toward each other, and a lazy tongs having its upper extremities in slidable contact with said piston and its lower extremities in slidable contact with said blades.

3 A valve comprising a casing, an outlet in the upper end of said casing, cap having vents therein surrounding said outlet, a

light-weight sphere lying within said cap and normally adapted to close said outlet, an inlet near the bottom of said casing, a piston slidably mounted in said casing and having a plurality of horizontally radiating fingers separating said piston fromsaid casing to allow the tree passage of fluid past the same, a pair oi thermostatic blades bound together at one end in the form of an erect V and adapted to be actuated by heat to close toward each other, said pair of blades being mounted in the bottom of said casing, and a lazy tongs having its upper extremities in slidable contact with the bottom of said piston and its lower extremities in slidable contact with the inner surfaces of said blades.

In witness whereof I afiix my signature.

JOSEPH CARMEL. 

